Fixes the following W=1 kernel build warning(s):

 drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c: In function ‘_rtl92c_phy_iq_calibrate’:
 drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c:1223:6: warning: variable ‘bbvalue’ set but not used [-Wunused-but-set-variable]

Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Kalle Valo <redacted>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: zhengbin <redacted>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <redacted>
---
 drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
index 661249d618c09..70706d51805da 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c

@@ -1220,10 +1220,9 @@ static void _rtl92c_phy_iq_calibrate(struct ieee80211_hw *hw,
 		0x522, 0x550, 0x551, 0x040
 	};
 	const u32 retrycount = 2;
-	u32 bbvalue;
 
 	if (t == 0) {
-		bbvalue = rtl_get_bbreg(hw, 0x800, MASKDWORD);
+		rtl_get_bbreg(hw, 0x800, MASKDWORD);
 
 		_rtl92c_phy_save_adda_registers(hw, adda_reg,
 						rtlphy->adda_backup, 16);

-- 
2.25.1